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Name
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Reference
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Plots↓
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Description |
Comm #11431
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Populus tremuloides / Rubus parviflorus Forest
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accession code: VB.CC.32882.CEGL000602
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Western Ecology Working Group of... |
0
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This rare but widespread forest occurs on slopes at high elevations in the mountains of western Wyoming, southeastern Idaho, northeastern Utah, and northwestern Montana. Stands of this type have been documented from 2440 to 2835 m (8000-9300 feet) elevation, on the upper and middle portions of fairly steep slopes with a variety of aspects and parent materials. <i>Populus tremuloides</i> forms the tree overstory, and <i>Rubus parviflorus</i> strongly dominates the shrub layer. The herbaceous layer consists primarily of low-growing forbs. |
Comm #11432
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Populus tremuloides / Shepherdia canadensis Forest
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accession code: VB.CC.32824.CEGL000606
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Western Ecology Working Group of... |
0
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This <i>Populus tremuloides</i> forest association occurs in eastern Idaho, western Wyoming, and central Colorado. It occurs on dry ridges between 2092 and 3078 m (6860-10,100 feet) elevation. This association is considered one of the driest aspen types. Stands usually occur on steep low to midslopes, although stands have also occurred on near-flat terraces. Soils are often dry, well-drained sandy loams. The tree canopy is dominated by <i>Populus tremuloides</i>. Scattered conifers, such as <i>Abies lasiocarpa, Picea engelmannii, Pseudotsuga menziesii</i>, or <i>Pinus contorta</i>, are frequently present in small amounts. The shrub layer is characterized by the dominance of <i>Shepherdia canadensis</i>. <i>Juniperus communis</i> can also have high cover. Additional shrub associates can include <i>Amelanchier alnifolia, Rosa woodsii, Symphoricarpos oreophilus, Arctostaphylos uva-ursi</i>, and <i>Paxistima myrsinites</i> among others. The herbaceous layer is composed of a mix of graminoids and forbs, the latter often more abundant and diverse. Common (but not consistent) graminoid species include <i>Elymus trachycaulus (= Agropyron trachycaulum), Bromus ciliatus</i>, and sometimes <i>Calamagrostis rubescens</i>. Forbs usually present (but no one species consistently so) include <i>Geranium viscosissimum, Lupinus argenteus, Thalictrum fendleri, Osmorhiza berteroi (= Osmorhiza chilensis), Fragaria vesca, Galium boreale</i>, and <i>Achillea millefolium</i>. Diagnostic for this association is the prominence of <i>Shepherdia canadensis</i> in the shrub layer, below a <i>Populus tremuloides</i>-dominated overstory. |
Comm #11433
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CEGL002624
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accession code: VB.CC.5032.CEGL002624
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11434
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Populus tremuloides / Symphoricarpos oreophilus / Tall Forbs Forest
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accession code: VB.CC.32934.CEGL000615
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Western Ecology Working Group of... |
0
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This deciduous forest association is widespread in the Intermountain region on the western U.S. It is found at montane and subalpine elevations from 1890 to 2960 m (6200-9700 feet) across its latitudinal range. Sites include lower slopes and benches, draws, sheltered slopes, and high benches that range from flat to moderate slopes of any aspect. Northern to eastern aspects are common in the drier and warmer environments in the southern portions of its range. Soils are variable but include loams or sandy loams that are often derived from sandstone parent material. The vegetation is characterized by a moderately dense to dense tree canopy of <i>Populus tremuloides</i> with a short-shrub layer with at least 10% cover that is dominated by <i>Symphoricarpos oreophilus</i>. The herbaceous layer present with at least 10% cover is dominated by tall forbs such as <i>Agastache urticifolia, Eucephalus engelmannii, Hackelia floribunda, Mertensia arizonica, Osmorhiza occidentalis, Senecio serra</i>, and <i>Valeriana occidentalis</i>. Occasional conifer trees are possible in a stand but do not make up more than 10% of the tree canopy. |
Comm #11435
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Populus tremuloides / Veratrum californicum Forest
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accession code: VB.CC.31164.CEGL000621
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Western Ecology Working Group of... |
0
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This quaking aspen association is known from scattered locations from the Rockies of Colorado west across southern Idaho, Utah, Nevada and into the Sierra Nevada in California where it is found particularly on the west side of the range. It is usually considered a low-lying meadow edge type with most stands occurring between 1980 and 2440 m (6500-8000 feet). Aspects are varied and not significant in distinguishing this type; slopes are gentle to flat. Stands lie on the lower third of slopes or bottoms and are often part of meadow or riparian complexes. There is abundant moisture available in these sites. Stands are usually mixed hardwood and conifer forests with <i>Populus tremuloides</i> mixing with <i>Abies concolor</i> and <i>Abies magnifica</i>. Occasionally <i>Pinus contorta</i> is present. Shrubs are generally unimportant, but the herb layer is well-developed accounting for an average of about 50% cover (forbs and graminoids combined). |
Comm #11436
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CEGL001999
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accession code: VB.CC.4552.CEGL001999
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11437
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Acer negundo / Cornus sericea Forest
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accession code: VB.CC.34551.CEGL000625
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Western Ecology Working Group of... |
0
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This association is known from lower montane canyons in Utah, western Colorado, and the southeastern corner of Idaho at elevations of less than 1985 to 2350 m (<6500-7700 feet). It occurs on gently sloping terraces and benches in narrow, shady canyons on second-order and higher streams. The overstory of this forest association is dominated by <i>Acer negundo</i>. <i>Betula occidentalis, Alnus incana</i>, or <i>Acer grandidentatum</i> occasionally form a dense low-tree layer. Cover of <i>Cornus sericea</i> is usually greater than 25%, and <i>Salix lutea</i> or <i>Salix exigua</i> are occasionally present. Minor amounts of <i>Rosa</i> spp., <i>Ribes inerme</i>, and <i>Symphoricarpos oreophilus</i> may also be present. The herbaceous layer is highly variable, with <i>Maianthemum stellatum (= Smilacina stellata)</i> and <i>Geranium richardsonii</i> commonly occurring. <i>Populus angustifolia, Salix exigua</i>, or other <i>Acer negundo</i> types may dominate adjacent riparian plant communities. |
Comm #11438
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Populus tremuloides / Ligusticum filicinum Forest
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accession code: VB.CC.26170.POPULUSTREMULOI
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Western Ecology Working Group of... |
0
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Comm #11439
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Grayia spinosa / Picrothamnus desertorum Shrubland
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accession code: VB.CC.19474.GRAYIASPINOSAPI
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Western Ecology Working Group of... |
0
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Comm #11440
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V.A.10
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accession code: VB.CC.212.VA10
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EcoArt 2002 |
0
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